Process of producing bright paints



U RTE S CARL nrr'rmena,

FFICE OF BRESLA'U, GERMANY, ASSIGNOR TO CARNITT-ROSTSGHUTZ 8t FABBSTOFF G. M. B. H., 013 BRESLAU, GERMANY PROCESS OF PRODUCING BRIGHT PAINTS No Drawing. Application filed October 31, 1927, Serial 1T0. 230,166, and in Germany May 14, 1927.

5 The characteristic feature of the invention consists in that to the ground slag electropositive zine powder is added prior to admixing the slag with the binding matter. It has been proposed, to use electropositive zinc as rust preventing means, but the durability of a paint with zinc is very limited as the Zinc with the binding matter does not enter into an intimate combination with the iron or I wood. When, however, according to the new process, ground coal slag isadmixed With finely ground electropositive zinc and, with the addition of a binding matter, is used as paint, the zinc increases the rust-preventing minerals) which are desired to give the desired excellent results.

I cla1m:-

l. A. rust resistingi paint comprising about eighty percent of nely ground coal slag, about twenty percent of finely ground electropositive zinc, and a vehicle.

2. An iron article having a coating containing finely ground coal slag and finely ground electro-positive zinc.

In testimony whereof I aflix my signature.

CARL NITTINGER.

capability of the coal slag and goes, together with the coal slag, into an intimate combination with the iron, wood or the like, so that such a paint is a much better rust protection than all the commonly used rust preventing paints and the durability of the paint becomes illimited. The zinc, in the combination of electropositive zinc with the coal slag, obtains the softness which the coal slag in combination with its binding matter possesses, so that the paint can not longer scale off the painted body, even when this body is submitted to alterations of shape.

For carrying out the process about 80% of finely ground coal slag are mixed with about 20% of finely ground electropositive zinc and to this mixture the desired quantity of binding matter, varnish or the like, is added.

The painting might be carried out also by painting the surface with varnish and in 40 blowing onto this coating of varnish the mixture of coal slag and electropositive zinc.

The colour tone of the ground slag can be altered by addition of mixed colours, and the mass may be used as spattle-cement.

The term coal slag as used herein is intended to refer to that product which results where coal is burned at very high temperatures and where the melting point of the ashes is passed. The slag or molten ashes generally comprise silicates or glasses and 

